The "Chaosknoten" logo has been created by Wau Holland for the Chaos Computer Club e.V. (http://www.ccc.de). It is now owned by Wau Holland Stiftung (http://www.wauland.de/). Wau Holland Stiftung has given BlinkenArea the permission to use the logo for this electronics kit upon condition the hardware design and the software is published under a free license (via email on 2019-05-16).